CVE-2026-54605

OAuth: Cross-origin token-request redirects can expose signed request metadata

State: Published
Severity: 7.2 High
Published: Jul 28, 2026
Updated: Jul 28, 2026
Reserved: Jun 15, 2026

Description

OAuth is a Ruby wrapper for the OAuth 1.0 and 1.0a protocols, providing clients and servers. From 0.5.5 to 1.1.5, OAuth::Consumer#token_request parses the raw Location header of a 300 to 399 redirect returned by the OAuth server and follows the redirect recursively, which can mutate the consumer's configuration and expose signed OAuth request metadata, including the Authorization header, to a cross-origin host. This issue is fixed in version 1.1.6.

Scores

CVSS	Score	Vector	Source
3.1	7.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-346 Origin Validation Error
CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
oauthruby-oauth	>= 0.5.5, < 1.1.6Affected

References

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